Your favorite and most accurate 158 gr. LSWC loads for your 4" 586??

[.45mtngun]

Gentlemen,
I am working up some loads for my 4" 586 using a RCBS 150 K mold with wheelweights, comes out at 156 grains. I am looking for something around 1100 to 1250 fps area. So far I have come up with 14.5 grains of H-4227 with cci-550 mag primers and 13 grains of 2400 with WSP primers. When I tried 14 grains of the 2400 I was getting sticky case extraction. The 2400 load seems snappier than the 4227 load. I am not sure of the velocity of either load. Both seem to be grouping around 1" at 15 yards off hand but I wanted to get your intake and experience with what i'm trying to accomplish. I have lots of experience with the larger calibers with cast bullets(.45 acp, .44 special, .44 mag, and 454 Casull), but not so much with this one. Any input and ideas would be greatly appreciated!! I want to stay with cast bullets with this gun. Thanks so much for your time!!
Jim C.

 

[bogman]

6.3gr. Unique & a winchester #550 magnum primer(it doesn't need magnums, but thats all I use.) I use a SNS castings or Rimrock 158gr. SWC & at 20yds. my #586-2 will eat a ragged whole that you can cover with a dime. that's if I do my part. the other bullet that is even more consistent is a SNS castings 158gr. Truncated cone (tapered flat point) bullet. it shoots great out of my 586 & my Ruger 77/.357 & my #65-2

 

[ArchAngelCD]

6.3gr. Unique & a winchester #550 magnum primer.

I think you made a small mistake there. Winchester primers are not numbered with a 550 but CCI primers are. The CCI-550 primers are small pistol magnum primers in the CCI line.

The Winchester standard SPP are their #1 1/2 primers. (The Win SPM primers are #1 1/2M)

 

[tappedandtagged]

12 grains of AA #9 and a magnum primer should get you in the velocity neighborhood you want. I just loaded some up with that recepie but haven't had a chance to try them yet.

 

[larbike]

7.5 grains Herco, 158 gr lswc, CCI 500 primer. I like to run them through a Redding profile crimp die. Great groups

 

[SSR]

I use both 6.4 grains of Unique and 6.2 Grains of Power Pistol under a 158 grain Penn TC bullet with a WSP Primer. I have not run them across the chronograph yet but both shoot well out of my 4" 686. Both are what I would call mild magnum loads. Much warmer than a 38+P load. The Power Pistol load is much cleaner than the Unique load. Also, it is MUCH more consistant for metering on my Hornody LNL Progressive press. SDV will tell the tale when chronoed.
Al

 

[gwalchmai]

I just loaded up a bunch of 158gr LSWCs over 8.5gr of AA5 and they shoot great in my 6" 586 and my 4" Model 65. I've also had good results with 12.5gr of 2400, 5gr of Titegroup, or 7gr of HS6.

 

[.45mtngun]

Thanks for all your input guys! I'll keep track of your information when considering new loads to work with, that is half the fun isn't it! gwalchmai, one load I want to test next is 12, 12.5, and 13 grains of 2400 since 13 grains shot pretty well the first go time. It fits right in with your 12.5 load, besides I have 5+ lb.s of the 2400 which is also used in my warm .44 mag loads. Thanks again,
Jim

 

[Snapping Twig]

Using the Lyman 358156 lubed with White Label BAC, 15.5g W296/H110 ignited with a WSP.

 

[David Sinko]

Recently I decided to put together an honest 1200 FPS load with the 158 gr. SWC and 2400. The chrono told me I need 14.2 grs. to achieve this. The recoil is definitely brisk but I have no trouble using it in IDPA matches. And there's no sign of sticky extraction in my 627 with 4" barrel.

Dave Sinko

 

[TAROMAN]

My favorite 357 load is 5.5 grains of Universal behind a 158 LSWC.
Chronographed at 1127 f/s from my Model 681 S&W.
Pleasant to shoot and very accurate.

 

[M29since14]

It may be just superstition or other silliness but I have always believed #2400 is probably a little easier on the gun than a corresponding amount of faster powder, so that is what I like to use. Of course I could have been wrong about that notion all these years, too. Who knows, for sure?

I am a little curious that you had sticky extraction with 14.0 of #2400, since that would not appear to be something that would cause that. I use anywhere from 12.5 grs to 14.0 grs of #2400 in my different .357s with bullets weighing around or a bit heavier than what you specify. I use Rem, Win, or Fed brass and always try to use Fed 100 primers, but have used all the other U.S.-brands when I had to. I have never had the slightest indication of trouble.

H-110 and Win296 should be easy on the gun too, but with the cautions about not downloading these powders, using load data exactly as listed, etc., I generally have avoided them. #2400 has always done what I wanted in my magnum revolvers, and I think the latest batches of it are better than they have been. I also seem to get less leading with #2400 than with faster powders.

 

[GF1]

I load 14.5 gr of 2400, Fed small pistol magnum primers, Starline brass, 158 hard cast SWC. I shoot this in both a M27-2 and a 686-3 to no ill effects. Easy ejection, superb accuracy.